Trading game · interview prep
Market Making Game for Quant Trading Interviews
Practice quoting both sides of a market under uncertainty. QuantPit's Market Maker game trains the exact instincts interviewers probe in live trading rounds: how wide to quote, when to skew, when informed flow is punishing you, and how to keep making decisions when every fill carries information.
What the game is
Each round asks you to make a two-way price on an uncertain value, then defend that quote against flow. Some traders are noise. Others know more than you do. If you quote too tight, the sharp flow lifts your mistakes immediately. If you quote too wide, you protect yourself but never trade. That tension is the point: market making interviews are rarely about a single right number. They are about balancing edge, inventory, and information in real time.
Why it matters in interviews
Firms such as Optiver, IMC, Flow Traders, and Jane Street often test the habits behind a quote, not just arithmetic. They want to hear how you anchor fair value, why you widened after a bad fill, and whether you understand adverse selection instead of memorizing jargon.
How to practice with it
Start by learning the building blocks in the market-making question set and the broader question bank. Then use the timed tests to sharpen arithmetic and reaction speed before coming back to the game. The best way to use this page is to narrate every quote: what your fair value is, how uncertain you feel, what trade would make you move, and whether your last fill was good news or bad news. That habit is what turns a simulation into interview-ready judgment.
The game also builds transferable skills: bid-ask discipline, quick expected-value thinking, inventory awareness, and the confidence to update on order flow without panicking. Those are the same muscles you need when a recruiter pivots from a puzzle into a trading conversation and asks you to make a market on the spot.
Common questions
What does the Market Maker game train?
It trains two-way quoting, spread sizing, skew adjustments, and reacting to informed flow without overtrading.
Which firms is this most relevant for?
It maps especially well to Optiver, IMC, Flow Traders, Jane Street, and other firms that use market-making interviews or trading games.
How should I practice with it?
Start with the market-making topic page and question bank, then play short sessions while narrating why you widened, tightened, or skewed your quotes after each trade.